The existence of difference sets in abelian 2-groups is a recently settled problem ; this note extends the abelian constructs of difference sets to nonabelian groups of order 64.
Copyright © 1991, Charles Babbage Research Centre. This article first appeared in Ars Combinatoria: 32 (1991), 311-314.
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Davis, James A. "A Note on Nonabelian (64, 28, 12) Difference Sets." Ars Combinatoria 32 (1991): 311-14.